Means for tuning radio receiving apparatus



y 1936. c. KOHLSAAT MEANS FOR TUNING RADIO RECEIVING APPARATUS Filed Jan. 13, 1953 7 Sheets-Sheet 1 m mm 6 A v gm; wN WW eB R 9 a Z, m A Z; d i w NN m 5 W 2% wK/ V July 28, 1936. Q KQHLSAAT 2,048,872

MEANS FOR TUNING RADIO RECEIVING APPARATUS Filed Jan. 13, 1933 '7 Sheets-Sheet 2 45. m fizz jaw/ 21 y 1936- c. KOHLSAAT MEANS FOR TUNING RADIO RECEIVING APPARATUS Filed Jan, 15,1955 7 SheetsSh'eet 3 July'28, 1936. c. KOHLSAAT 2,048,872

MEANS FOR TUNING RADIO RECEIVING APPARATUS Filed Jan. 15, 1933 7 Sheets-Sheet 4 Kam 6 7'2 fiaZiaaZ a Wm July 28, 1936. c. KOHLSAAT 2,048,372

MEANS FOR TUNING RADIO RECEIVING APPARATUS Filed Jan. 13, 1953 7 Sheets-Sheet 5 July 28, 1936. KOHLSAAT 2,048,872

MEANS FOR TUNING RADIO RECEIVING APPARATUS Filed Jan. 15, 1955 7 Sheets-Sheet 6 iyjz.

July28, 1936. K HL AAT 2,048,872

MEANS FOR TUNING RADIO RECEIVING APPARATUS Filed Jan. 13, 1933 7 Sheets-Sheet 7 m' M m Patented July 28, 1936 e, I 2,048,872

UNITED STATES PATENT OFFICE MEANS FOR TUNING RADIO RECEIVING I APPARATUS Carl Kohlsaat, Brookfield, 111., assignor of onehalf. to Floyd E. Foster, Brookfield, 111.

Application January 13, 1933, Serial No. 651,466

15 Claims. (01. 250 -20)- This invention relates to means for tuning enlarged scale, taken substantially on the line radio receiving apparatus, and has for its gen- 8-8 of Fig. 1-, and showing the working relation eral object to improve and simplify, in a practical of the battery of rotary discs of the automatic and eflicient manner, the selection and tuning inv station selecting and controlling means in plan of desired broadcasts for automatic reception, as view in connection with the regular station indiwell as for the manually operative selection of eating dial ofthe receiving set and the directly various broadcasts individually, at will. associated operating means, and the correlated One of the principal objects, more specifically time selecting scale on the outer side of the cabstated, is to provide a time controlled mechanism, inet or housing being shown in face View dia- 10 embodying a combination of mechanical and grammatically in connection with the holes for 10 electrical operating and controlling elementsor the removable key pin used in the setting of the devices, which may be installed in connection rotary disc elements;

with an ordinary radio receiving set without ne- Figs. 9, 10, and 11 are sectional views, taken cessitating any material alteration in the original respectively on the lines 99, Ill-40, and l ll I receiving set or the applied station selecting of Fig. 8, as illustrative ofrelative positioning of means. the rotary disc elements for different timing of A further object is to provide for the automatic reception; rendition of selected programs at predetermined Fig. 12 is a fragmentary detail sectional view, intervals after a pre-setting of the manually opon an enlarged scale, taken on or about the lines erable station selecting element, and-also the au- "-42 of Figs. 2 and 3, to show the working rela- 20 tomatic cessation ofthe reception at a predetertion of the terminal time controlling elements mined time. a i and the rotating brush contact members carried Other objects and advantages to be attained by the clock mechanism; and will hereinafter more fully appear. Fig. 13 is a general wiring diagram of a com- The invention consists in the general construcplete assembly of the working adaptation of the 25 tion and arrangement of the apparatus, and in invention as illustrated in the preceding figures the parts and combinations and arrangements of of the drawings. 1 parts as hereinafter described and pointed out Referring now to the drawings, the numeral 20 with particularity in the appended claims. designates the cabinet or housing of an ordinary In the accompanying drawings, illustrative of radio receiving apparatus which will be described a practical adaptation of the invention, and formherewith in a practical adaptation of the invening a part of the present specification,- tion. As shown, the front wall or panel 2| of the Fig. 1 is a front elevation of the. cabinet or cabinet is provided with a vertically elongated housing of a radio receiving set, showing the exslotted opening 22 through which slightly pro- 5 posed parts entering into the control and operatrudes a peripherally toothed wheel 23 which may tion of the apparatus; 7 be rotated by manual manipulation and is in Fig. 2 is a view, partly in rear elevation, with mesh with a gear 24 secured on a shaft 25 carrycertain parts broken away and shown in section, ing the rotary dial wheel 26, which latter has the and other parts more or less in diagram; broadcasting station numbers or wave lengths 4 Fig. 3 is a similar view, with parts of the radio of the respective stations indicated peripherally receiving apparatus removed from the cabinet or thereon, as at 21, and exposed through the sight o opening 28 provided therefor in the front wall of Fig. 4 is a horizontal section through the lower the panel of the cabinet. In the particular radio portion of the cabinet or housing, taken on or receiving apparatus of the illustrative adaptation about the lines 4-4 of Figs. 1 and, 2, and illusof the present invention, said shaft 25 also car- 5 trating in plan view the parts therein contained; rles the rotors 29 which cooperate with the sta- F 5 is a Vertical on, taken on or about tionary stators 30 of the regular condensers of the lineS of Figs. 1 and the apparatus, of which there are two illustrated, Fig. 6 is a detail view, in side elevation, with as at 3| and 32.

parts broken away, of one of the rotary discs of On the outer side of the front panel or wall 50 the automatic stationv selecting and controlling 21 of the cabinet, and adjacent the sight openmeans; ing 28, as shown, is a knob 33 which is fixed on Fig. 7 is a detail view of one of the disc spacing the operating shaft 34- of a combined off and collars or washers; on switch and volume regulator 35 located on Fig. 8 is a fragmentary detached view, on an theinside of the cabinet adjacent the front wall 55 or panel 2!. By turning the knob 33 to its off position the switch of the controlling element 35 is opened and the electrical circuit through which the current is supplied to energize the several tubes and other electrical interior appliances Within the chassis or body of the receiving set is broken, whereas if the knob 33 is turned in the opposite direction, to the on position, said electrical circuit is, of course, closed and the parts of the radio set connected therein are either energized or in operable condition; that is to say, the several tube elements are energized and all other electrically operated or controlled parts have their respective connections or actuating elements in energized or operable condition. In other words, the receiving apparatus is in receiving condition except as to the selection of the particular station to be tuned in, which, of course, is effected by adjustment of the condensers 3| and 32 through the manipulating means hereinbefore described for the manual tuning in operation.

It may be here stated that the receiving appa ratus, which, as hereinbefore specified, may be of any ordinary construction and arrangement and, of itself, forms no part of the present invention except as to the cooperative connection of the operating and controlling means of the present invention therewith, may have all of the component parts, including the sound amplifier, or loud speaker, enclosed within a single cabinet or housing of the regular small portable type or larger and more elaborate console or other style of furniture, as may be desired. In the apparatus illustrated in the accompanying drawings, the cabinet or housing contains only the chassis or main body portion of the receiver and associated parts of the present invention, and the loud speaker (not shown) may be located in any convenient place, either relatively near or remote from the cabinet, and connected through its extension cord by plugging into a socket 36 in one of the side walls 3! of the cabinet. So, too, a socket 33 may be conveniently located in the opposite side wall 39 of the cabinet for the plugging in of a cord as usually employed for effecting the connection with the source of electrical supply, said plug being indicated at 49 in Fig. 2 of the drawings and detached from said socket 39.

The socket and plug elements 38 and 49 may have any suitable interfitting provisions, but, as shown, the plug is provided with terminal pins 4| and 42, which are respectively connected to the circuit supply wires 43 and 44, and being insertable into openings in socket terminal elements (not shown), said socket terminal elements having circuit wires 45 and 46 connected thereto, and the wires 45 and 46 being respectively connected to terminal contacts 41 and 48 of a junction block 49 secured on the inner side of the wall 39 of the cabinet adjacent to said socket element 38, as shown structurally in Fig. 2, but more clearly shown diagrammatically in Fig. 13. This junction element 49 may be in the form of the ordinary commercial block type in which bus bars or electrical conductor elements 50 are embedded in a body of insulating material such as that commercially known as bakelite or the like or any other suitable structure of the box-like type commonly used for the purpose. As shown, the junction block 49 has a third terminal contact 5! in line with the hereinbefore mentioned terminal contacts 41 and 48, said contacts 41, 48, and 5| being respectively connected by the embedded bus bars 50 to an upper row of terminal contacts 52, 53, and 54-.

As shown more clearly in Fig. 13 of the drawings, a circuit wire 55 leads from the lower terminal contact 41 into the radio receiver chassis, designated, as a whole, by the numeral 56. From the receiver chassis 56 a return wire 51 leads to and is connected with the lower terminal contact 5| of the junction block 49.

As thus far described, it is obvious that electrical current from the source of supply, through the plug 40 when attached in the socket element 38, will pass through the wire 55 into the radio receiver and thence out through the wire 51 to said terminal contact 5| and then through the bus bar or conductor 50 to the correlated upper terminal contact 54 which is in turn connected by a wire 58 to a switch terminal 59. Adjacent said switch terminal 59 is a companion terminal 50 which is connected by a wire 6| to the middle upper terminal contact 53 of the junction block 49, the circuit being completed through the connecting bus bar or conductor element 50 and correlated middle lower terminal contact 48 and return wire 46 to the socket element 38 and the return wire 44 leading from the attached plug 40 to the source of electrical energy; that is to say, the circuit just described is completed when the switch terminals 59 and 69 are cross-connected by a switch element 62, which functions in the control and operation of the automatically operable parts of the apparatus, as will later be more fully set forth.

As just above stated, the circuit for the source of supply of electrical energy to the chassis 56 of the receiving set is completed when the switch element 62 is in position to connect the two terminal contacts 59 and 69 but, provided, of course, the switch portion of the combined switch and volume regulator 35 is in closed or on position, to which position it is preliminarily moved to place the radio receiver in condition to be operated and controlled either manually or automatically, as will hereinafter more clearly appear. In this connection, it may be here stated that the combined switch and volume regulator 35, which is connected to the receiver chassis 56 in the ordinary and obviously well known manner, is merely shown conventionally and is connected to the chassis and framework for completion of the circults and requisite grounding by the wires 63. 64, 65, and 66, respectively.

The apparatus thus far described is operable manually for the tuning in of the desired stations in the ordinary way. The mechanical and electrical controlling and operating parts of the present invention will now be described. Generally stated, the invention comprises a clock mechanism, a station selecting and timing unit correlated to the clock mechanism and the hereinbefore described manually operable dialing and controlling mechanism, and a cooperating automatically controlled motor.

The clock mechanism, as shown, includes an ordinary electrical clock mounted in a circular housing 61, said housing being secured on the inner side of a supplemental panel plate 59, of insulating material, secured in an opening pro vided therefor in the front wall or panel 2|. In the supplemental panel plate 68 is a central opening through which the dial 69 of the clock is exposed. Surrounding the clock dial 69, on the outer face of the dial plate 69, is an annular supplemental dial 10 marked with twelve equally spaced radial lines 1I corresponding to the. hour; Midway between marks of theclock dial proper. each of the radial lines II is a relatively shorter line 12, said lines 12 indicating half hours, while the. utilization of an annular series of open-ended: socket tubes I4 surrounding said supplemental.

dial I0, there being forty-eight of these tubular socket members I4 correlated one each to the several radial lines ll, I2, and 13 of said dial 10. These open-ended socket tubes I4 are composed of metal, preferably copper on account of its electrical conductivity, and said tubes project some distance. beyond the inner face of said supplemental panel plate 68, which, as hereinbefore stated, is preferably of material of non-electric conductivity, and thus the tubular members I4 are insulated from each other.

Each of the tubular socket members I4 is connected individually by a wire I5 to a brush element 19, of which there are, of course, fortyeight, in accordance with the structure herein illustrated, and, in any case, a number corresponding to the number of socket tubes 14 employed. As shown, the several brush elements I6 are mounted on a supporting bar 11 and insulated from each other, preferably in a simple manner by making the bar II of suitable insulating material. As shown structurally in Figs. 2 and 3, and diagrammatically in Fig. 13, said wires I5 are gathered into an annular cable structure or protective covering I8 and distributed at their opposite ends from said cable structure or covering to the respective socket tubes 14 and brush elements 16.

Each of the brush elements 16 has a slidable engagement at its free end with a circular disc element I9 which is mourited loosely on a shaft 80 but is normally frictionally held, as will be presently described, so as to rotate with the shaft unless positively held from rotation, or has applied thereto braking resistance overcoming the frictional clutch connection between it and said shaft 80. In the illustrative structural adaptation of the present invention, said shaft has the hereinbefore mentioned peripherally toothed wheel 23 secured directly thereto whereby the one rotates in fixed relation to the other, and by which connection with the wheel 23 and the gear 24, as hereinbefore described, the dial wheel 26 and rotors 29 of the condensers 3I and 32 of the radio receiver are simultaneously rotated in correlation to the discs I9, of which latter there are forty-eight, corresponding to the number of.

brushes l6 and socket tubes 14 in the structure shown.

Interposed between each of the discs 19 is a washer 8| in the central opening of which is a key lug or projection 8| which slidably fits a longitudinal slot 82 in the shaft 80 whereby to be freely adjustable endwise of the shaft but fixed" to rotate positively therewith. At one end of the shaft 80 is a collar 03 which abuts a supporting bracket 84 projecting from a metal lining plate 85' endmost disc abutting the collar 83 and them)- posite' endmost disc against the outer face of whicha loose collar 86 abuts, said collar 80 being pressed by a spring element 81 interposed between said collar 86 and another collar 88 abutting a supporting bracket 89. It may be here also noted that the supporting bar 'I'I for the brush elements I6 is conveniently mounted on said supporting brackets 04 and 89.

Each of the disc elements 19, which are made of metal of electrical conductivity, preferably brass, has a peripheral aperture or recess 90 and a diametrically disposed circumferential insert 9| of insulation material, so that when its cooperating brush element I6 is in contact therewith atv any point throughout its circumference except where the non-electrical conductive insert 9| is located, current is conducted through the brush element and the engaged disc member 19 and the metalliosupporting frame including the bracket elements 84 and 89 and the lining plate 85, which latter is electrically connected by a wire 92 to a solenoid magnet coil 93, from which latter a wire 94 leads to the terminal 95 of a switch element 96, whose opposite terminal 91 is connected by a wire 90, as at 99, to a switch terminal I00. Said wire 98 is also connected, as at I I with a solenoid magnet coil I02, from which latter leads a wire I03 which is extended through an aperture I04 in the front wall or panel 2| of the cabinet and is provided at its outer end with a plugging-in pin I for insertion in one of the tubular socket members "for the purpose of functioning as a circuit terminal contact in automatically stopping operation of the receiver at a predetermined time, said pin being hereinafter identified and referred to as the stopping pin.

A second plugging-in pin I06, identical in form and size with the pin I05, and applied in the same way, except for a different purpose, namely, that of starting instead of stopping automatic reception, and hereinafter identified and referred to asthe starting pin, is provided at the outer end of. a wire I01 extended outwardly through an opening I04? in the front wall or panel 2| of the cabinet, similar to the opening I04 for the wire I03, said wire I01 being connected on the inside of the cabinet to a solenoid magnet coil I08v whose opposite circuit wire I09 is connected to a switch terminal contact I I0.

Associated with the switch terminal contact I00 is a companion terminal contact III, said terminal contacts I00 and III being connectible by a switch element I I2 which is operably connected to the reciprocatory core element of the solenoid I02 by an insulated cross-head II3 which also carries the attached switch element 62, whereby said switch elements 02 and I I2 are simultaneously actuated in closing and breaking the connections between said switch terminal contacts 59, 60, and I00, III. The switch terminal contact IIO has associated therewith a companion terminal contact I I4, said terminal contacts I I0 and H4 being connectible by a switch element II5 which is attached by an insulated arm III; to the reciprooatory core member of the solenoid I08, whereby when the core member is moved in one direction the switch element H5 is moved to close the circuit across the contacts H0, H4,

and in the opposite direction the circuit is broken. In'the diagram illustrated in Fig. 13 of the drawings, the switch element 62 is shown in connecting relation to the terminal contacts 59 and 60, and likewise the switch element IIZ with the terminal contacts I and I I I, while the switch element H5 is moved out of connecting relation to the terminal contacts II 0 and H4. At this time, as illustrated in the diagram, neither the stopping pin I05 nor the starting pin I06 is plugged in or inserted in any one of the tubular socket members 1 1, but their functioning effect will hereinafter be described. However, at this time, the receiving set is in operable condition and under the control of a clock mechanism, to be later more fully described.

As shown, the two switch terminal elements HI and H4 are connected by a wire II1 which is in turn connected by a wire II8 to the secondary coil I IQ of an adjustable transformer I20, the opposite circuit wire I 2I of said secondary coil IIS being connected electrically with the clock housing 61 through a connecting bar or plate I22 and the supporting bracket member I23.

The primary coil I24 of the transformer I is connected at one end by a wire I25 to the terminal contact 41 of the junction block 49, which is connected through the wire 45, socket 38, and plug terminal pin 4! to the lead-in wire 43 from the source of electrical supply (not shown). From the opposite end of the primary coil I24 a wire I26 leads to the terminal contact 48 of the junction block 49.

From the terminal contact 53, which is connected by the bus bar or conductor element 50 to said terminal contact element 48, a wire I21 leads and is connected to a wire I28, which in turn is connected to the internal motive mechanism (not shown) within the clock housing 61. The circuit from the clock operating mechanism is completed through a wire I29 which is connected to a wire I30 leading and connected to the terminal contact 52 of the junction block 49.

The circuit wire I21 beyond the junction with the clock wire I28 is connected to an electric motor 3I, from which, in turn, a wire I32 leads to a switch terminal contact I33. Associated with said switch terminal contact I33 is a companion terminal contact I34 to which the wire ISt is extended from the junction of the clock wire E29 and there connected. These terminal contacts I33 and 34 are connectible by a switch element 535 which is normally out of engagement with said terminal contacts but is brought into circuit closing engagement by the energization or" the solenoid magnet 93.

Adjacent the companion switch terminal contacts iSB, 534, is a pair of terminal contacts I36, I31, which are normally cross-connected by a switch element I38 having an operative connection with the reciprocatory core of the solenoid 93 whereby, upon the energization of the solenoid coil, the switch element I38 is moved out of engagement with said terminal contacts I36 and i3"! simultaneously with the movement of the opposed switch element I into circuit closing engagement with said terminal contacts I33, I34. The terminal switch contact I31 is connected, by a wire 53:), into one of the circuits of the sound amplifier and loud speaker circuits of the receiving set within the chassis 56, while from the terminal contact I35, when the switch element I33 is in circuit closing engagement with said contacts 535 and I32, a wire I40 leads and is connected to the terminal portion I4I of the plugging-in socket member 36 at the place where one of the connections is made with the tone transmitting portion of the loud speaker. From the opposite terminal I42 a wire I43 leads back into the chassis 56, thereby completing the circuit. From the other terminals I 44 and I45 of the plugging-in socket 36, wires I46 and I41, respectively, lead into the chassis 56 to complete the other circuit of the sound amplifier and loud speaker.

It may be here noted that during the time the motor I3I is in operation and performing the function for which it is especially provided, as will be presently more fully explained, it is desirable to have the loud speaker cut out, and it is for this reason that the provision is made for breaking the circuit connection between the terminal contacts I36 and I31 when the motor circuit is closed by the operation of the solenoid 93 and the resultant engagement of the switch element I35 with the terminal contact members I33 and I34. In other respects the circuit arrangements are the same as provided in the ordinary radio receiving apparatus.

Before entering into a more complete description of the function of the hereinbefore mentioned disc members 19 and their manner of selective adjustment, and also their eventual operation, into which the electric motor I3I enters, the device for effecting electrical contact and circuit connections with and between the inner end portions of the tubular socket members 14 and the clock body frame or housing 61, and likewise between the inner end portions of the inserted stopping pin I05 and starting pin I06 and said clock frame or housing 61, will be described. For this purpose a 1-0- tary element I 48 is located between the supplemental panel plate 68 and the clock housing 61 which is supported in spaced relation to said panel plate by the supporting bracket members I23, of which there are four diagonally disposed, as best shown in Figs. 2 and 3, said diagonal members being supported at their outer ends by plates I49, which latter are secured to the inner face of the front wall or panel 2|. In this connection, it may be also noted that the clock dial proper 69 is mounted in a circular opening provided therefor in the supplemental panel plate 68. Therefore the space between the supplemental panel 68 and the clock housing 61 is provided for the accommodation and operation of the rotary element I48 which, although not shown in detail, is obviously mounted in any suitable manner to rotate with the hour hand of the clock, but preferably by direct attachment to the spindle of the clock mechanism which ordinarily carries the hour hand, by which mounting and operation said rotary element I48 makes one complete revolution every twelve hours.

The rotary element I 48 may obviously be in the form of a radial arm, as shown. At the outer end thereof there is formed integrally or otherwise provided a resilient contact member I50 which is slotted longitudinally inward from its outer end to provide a pair of separate tongue portions I5I and I 52. The tongue I5I next adjacent the panel plate 68travels in a circular path into which the Cal inner ends of the tubular members 14 project,

while the inner tongue I52 travels in a circular path into which the inner end portion of the inserted starting pin I06 of the stopping pin I05, as the case may be, projects, as shown more clearly in Fig. 12 of the drawings. It will thus be seen that whenever the tongue portion I5I engages any of the socket members 14 or the tongue portion I52 engages the inserted pin I05 or I06, as the case may be, an electrical circuit may be completed through the rotary member I48 and the switch elements 62 and I I2, and also the hereinhour hand shaft of th c o k mechanism. an through the housing 61' thereof, and supporting bracket member I23 and the connecting plate 122 to the wire HI and secondary coil I I9 of the trans former I20, as hereinbefore described.

The shaft on which the circular disc elemerits a o ed h s a oiroumisrsnfi lly grooved clutchdisc I53 feather-keyed thereon, as at I54 (see Figs. 3 and .8), said clutch dis 'ng en a ed by t pp yoke o tion 15 5 f a 5... ts? lever I56 which is pivoted, as at I51, to a bracket member I58 secured on the inner lining plate Connected to the lower end of the shifter lever I56 is a spring I59 which functions to move the lever I56 and yieldably hold the cluth disc {53 in engagement with a notched hub portion It!) of an oscillatory crank arm Hil which is sleeved loosely so as to rotate freely about the shaft'llfl, on the end of which it is mounted, except when engaged by the clutch member I53 which locksit to the shaft 89 against rotation independently thereof,

In order to h ld .the clutch co lar 1.593 Q en a e n it h hub por ion o the cra k arm I6I when it is desired or necessary to permit rotation of the shaft 80 in mak n flfl lfi mfihts of the discs .19 thereon without effecting movement of the crank arm I6 I a crank at 5? i mounted on a shaft I63 projected throughthe front wall or panel 2I of the cabinet and proyided at its outer end with a knob 165 by whichthe shaft I63 may be turned to oscillate thecrankarm I52. Qn the crank arm I62 is a pin I65 which engages the lower end portion of the shifter lever I56 whenthe shaft IE3 is turned in one direction, whereby to move the clutch collar I53 from engagement with the hub portion I68 of said arm ISI,

The crank arm I6I is connected by a link I 6 to a rotating crank arm 51 w ich attached. integrally or otherwise, tothe hubportion Iflcf a worm gear wheel I69, or directly to the shaft I19 on which said'worm gear I 69 is fixed, so to rotate therewith. The shaft I10 is iournaled in the bearing portion ,I1I of a supporting bracket I12 which is attached to a block member {13secured on the under side of the top wall 114 of the cabinet, there being preferably a plate ofjnsulating material I15 interposed between the bracket I12 and the block 113. J ournaled in hearings I16, provided therefor on the bracketmember 1-12, is a worm screw I11 which meshes with the gear I69, the shaft portion I18..ofsaid worm screw 1-11 being provided with a spur gear I19 which in mesh with a pinion 189 on the power J8! of the hereinbefore mentioned electric motor I3 I the operation of which latter is automaticallystarted and stopped, as will be later more fully described.

Before describing the automatic stopping and starting of the electric motor I3I itmay be here stated that in order to place the radio receiver in receptive condition the on-and-ofi switch'35 must be closed, and, further, the switch elements Hand I I2 must also be in circuit closing relation to their v respective terminal contacts .59, 68, and 1,88 111 which latter have been previously described in ein more particularly with reference to the diagram illustrated in Fig. 13, and as .to their operation automatically by the completion .0; electrical cincuits t on -h t n erti fthe s pin p n 1'95 a s a n pin b a d e ements. to the with their respective cooperative solenoids I92 and I08, are illustrated mechanicallyin Figs. 2 audit of the drawings and are manually operable, as now be set forth.

In the mechanicalstnucture illustrated, said before described switch element I I5, are operably connected to a common actuating shaft I82 of insulating material which is provided with a lever arm I83 having an operable connection with an intermediate neck portion ltd connecting the core members of the two solenoids I02 and I88, said lever arm I83 being rocked in opposite directions upon the alternate energization of the solenoids I02 and H13, and the shaft 582 on which the arm I83 is mounted being also extended through the front wall or panel 2| of the cabinet and provided on its outer end with a knob I85 by which the shaft may be turned manually to effect the opening and closing ofthe circuits which are automatically opened and closed by the operation of the solenoids I62 and I68. Thus to start or stop the operation of the radio receiver, said knob I85 may be accordingly manipulated manually.

Each of the disc members 19 is effectively correlated to a given period of time for the automatic operation of the radio receiver. That is to say, for example, the clock controlling and operating mechanism is divided into forty-eight periods, of

fifteen minutes each, and,accordingly, there are 2 forty-eight of the disc members 19 in the practical adaptation of the invention illustrated. In other words, the several tubular socket members 14 are spaced in the annular series at radial points corresponding to the quarter-hour divisions of the o clock dial proper 59, and each of the socket members 14 has one of the disc members 19 correlated thereto and operably connectible electrically by its circuit wire 15 and brush element 16; and when it is desired to receive the broadcast from any particular station, and during a given fifteeneminute or quarter-hour period, the disc for that period is adjusted with respect to the station selecting dial wheel 26. To accomplish this a setting pin I86 is insertable in any one of a series of apertures I81 provided in the front wall or panel 2| of the cabinet in a horizontal row, and each of the holes being correlated to one of said discs 19 so that when the aperture or recess 99 of the disc is brought into registering alinement with its correlated pin receiving hole I81, the inserted setting pin will enter the aperture or recess 98 of the disc 19 and hold the disc against rotation. 7

Prior to adjustment, of course, the clutch I53 must necessarily be thrown out of engagement with the hub portion I69 of the crank arm I6I so thatshaft .80 is free to be rotated manually by the manipulation of the toothed wheel 23 which is projected through the opening 22 in the front wall or panel 2 I.

It will be here noted that when the particular disc 19 is held against rotation by the inserted key or setting pin 96, all of the other disc members 19 rotate with the shaft, owing to the frictional engagement of said disc members with the spacing washers 8! which are feather-keyed to the shaft. At the same time, owing to the intermeshing of the toothed wheel 23 with the gear .24 on thershaft 25, the dial wheel 26 carrying the broadcasting station identification symbols or .call numbers 21 is rotated with the shaft 80; and when the identification symbol or number for the par- .or panel 2|. When the key or settingpin H6 is not in use it may be inserted in a dead hole in the front wall or panel, as shown at I88 in Figs. 1 and 8 of the drawings.

Preferably, a scale plate I89 is provided on the outer face of the front wall or panel H with holes I99 registering with the key or setting pin holes I81 in the front wall or panel proper 2!, and, also, the holes I8! register with a corresponding series of holes I9I in the lining plate 85. As shown more clearly in Figs. 1 and 8 of the drawings, the scale plate I89 is provided with twelve relatively long division lines I92, corresponding to the relatively long radial lines II of the annular supplemental dial I9, and respectively correlated to the apertures I90 for the setting of the discs I9 on the hour, these particularly correlated holes being respectively numbered from I to I2, inclusive, as are the lines II of said annular dial I0. The intermediate holes for the setting of the discs I9 on the half-hour have correlated therewith relatively shorter lines I93 on the dial plate !89, similar to the radial lines I2 of said annular dial I0, while the holes I90 for the setting of the discs I9 on the quarter-hour have correlated short lines I 94, said lines obviously facilitating the application of the key or setting pin I86 in the proper hole in the dial plate I89 for the disc setting for reception of the desired program at a definite time.

It may be here stated, when a disc element I9 is engaged by the key or setting pin I 86 the insulated or dead spot SI of the disc is engaged by its correlated brush element I6 and, while the disc element I9 is so held, the dial wheel 26 is rotated to bring into register with the center of the sight opening 28 the identification symbol or number of the particular station whose broadcast it is desired to receive at the time for which the disc element I9 is set, after which the key or setting pin I36 is removed from engagement with said disc I9, and the disc thereafter moves in the same set relation to the dial wheel 26 until it is readjusted relative thereto for some other station. This is true because the disc shaft 89 and the shaft 25 carrying the dial wheel 26 and condenser rotors 29 of the radio receiver are never turned in either direction one full revolution, but, on the contrary, are merely oscillated back and forth, either when manipulated manually in the setting operations or under the driving power of the motor I3 I, as presently described. This limitation to oscillatory movement is because of the fact that the condenser rotors 29 are limited in their rotative movement so that the shaft 25 only turns through a range of approximately degrees; and the shaft 30, owing to its gear connection with the shaft 25, oscillates through approximately the same range, or even to a lesser degree, and also due to the relative lengths of the crank arms I6I and I61, the crank arm I 6| being somewhat longer than the arm I61 so that it merely is oscillated while said crank I6! is making a complete revolution with the worm gear wheel I69.

In order to operate the radio receiver either by the selection of the desired broadcasting station by manual manipulation only, or by the utilization of the automatic operating and controlling elements, the on-and-olf switch 35, as hereinbefore set forth, must be turned on, either before or after the manual station selecting adjustment has been made. So, too, whether the radio receiver is to be operated only by manual manipulation and control or by the use of the automatic controlling and operating elements,

the switch knob I85 must be turned to on po sition to close the switches 62 and H2, as hereinbefore specified, except in cases where it is desired to set the disc members I9 at a considerable time before the broadcast is to be received automatically, and then said knob I85 may be left in the off position, with said switches 62 and H2 correspondingly in opened position to be closed by the insertion of the starting pin I06 in the tubular socket member I4 at the time corresponding to the time in which it is desired to automatically start the reception of the selected broadcast, in which latter position of the knob I85, the switch H5 is in closed position whereby the circuit for the solenoid I08 is closed until such time that the tongue portion I52 of the contact member I50 moves into engagement with the inserted starting pin I 06.

When the tongue portion I52 of the rotating contact member I50 engages the inserted starting pin I06 the circuit is completed through the arm I48 which carries said contact member I50, the clock frame and housing 61, supporting bracket I23, connecting bar I22, wire I2I, secondary coil II9 of the transformer I20, wires H8 and III,

contacts H4 and H0 which are closed at the time by the switch element H5, wire I09, coil of the solenoid I08, wire I01, and starting pin I06 which is engaged by the contact tongue I52. Upon the completion of this circuit the solenoid coil I08 is energized whereby the solenoid core is moved in the direction to move the switch element II5 to open position with respect to the terminal contacts H0 and H4, and simultaneously effecting the closing of the switches 62 and I I2, whereby the electrical automatic controlling elements are placed in operable condition, the same as if the switch knob I85 had been turned manually to the on position.

Should it be desired to automatically place the automatic controlling means in inoperable condition, it is only necessary to insert the stopping pin I05 in the socket tube I4 at the place on the annular dial I0 coordinated with the place on the clock dial proper 69 indicative of the time at which it is desired to automatically stop the operation of the receiving apparatus.

Thus, when the inserted pin I05 is engaged by the tongue portion I52 of the contact member on the rotating arm I48, the circuit is completed through the clock mechanism and housing 61 and the hereinbefore mentioned connections between the supporting bracket and the wire II], which latter is connected to the switch terminal contacts III and I00, at the time connected by the switch element I I2, thence through the wires 99 and IN, solenoid coil I02 and wire I03 to the stop pin I05 which is engaged by the contact tongue I52. Upon the completion of this circuit the solenoid coil I02 is energized and the reciprocatory core member carrying the switch elements 62 and H2 is moved in a direction to disconnect the switch elements 62 and H2 from the contacts 59, 60, and I00, III, and simultaneously therewith the switch I I5 is moved to connect the terminal contacts H0 and I I4, at which time the knob I85 is moved automatically to the off position. The breaking of the connection between the contacts I00 and II I opens the circuit through the secondary coil I I9 of the transformer I 20 and at the same time the breaking of the connection between the switch terminal contacts 59 and 60 opens the circuit between the chassis 56 of the radio receiver and the plugging-in socket 38 from the source of electrical energy.

in the course of its continued travel, the rotating arm I48, every time its contact tongue portion I5I engages a tubular socket member I4, unless the correlated disc element I6 happens to be set at the time in a position where its insulated insert or dead spot 9| is engaged by the cooperating tongue member I6, and provided, of course, the switch element I I2 is in closing relation to the terminal contacts I and I I I, a circuit is closed through the clock mechanism and housing 61, bracket member I23, connecting member I22, wire I2I, secondary coil I I9 of the transformer I20, wires H8 and 1, switch element H2 and terminal contacts I00 and I I I, wires 99, 90, switch 96, wire 94, solenoid coil 93, wire 92, metal lining plate 85, the correlated disc member I9 and brush element I6, and their wire I5, and said tubular socket member I4 with which the spring tongue contact member I5I is in contact. 7

Upon the completion of this circuit the solenoid coil 93 is energized, thereby moving the core thereof in the direction to operate the switch I so as to close the motor circuit, said circuit being through the connected terminal contacts I33, I34, wire I30, connected terminal members 52 and 41 of the junction block 49, wire 45, plugging-in socket 38 from the source of electrical supply, wire 46 from said socket 38, the connected terminal members 48 and 53 of said junction block .49, wire I2I, the motor I3I, and wire I32 back to the switch terminal I 33. Upon the completion of this circuit the motor operates, and through the link connection between the rotating crank arm I6I driven thereby and the oscillatory crank arm I6I which is clutched to the shaft 80 by the clutch member I53, said shaft 80 is rotated and, of course, the several disc elements I9 are rotated therewith. The motor continues'to operate as long as the contact tongue portion I5I of the rotary element I48 is in contact with a tubular socket member I4, whose correlated disc member I9 is still in electrically conductive contact with the companion brush element I6. That is to say, the motor continues to operate until the brush element I6 is engaged with the insulated insert or dead spot 9I of the disc element; and the electrical circuit is broken upon either the upstroke or downstroke of the oscillatory crank arm I6I. It may be here, therefore, noted that unless a disc setting has been effected for the reception of a broadcast at a given time, at which time the disc will be in position where its insulated insert or dead spot 9I is engaged by its cooperative brush element I6, the motor I3I, by the sequential engagement of the contact tongue portion I5I of the rotating member I with the tubular socket members I4, will operate intermittently at the end of each fifteen-minute period, and by the same token the motor will start operating immediately after the reception of each fifteen-minute broadcast, unless at the beginning of the next fifteen-minute period the disc element I9 has been set for the reception of a broadcast, it being understood, of course, that the dial wheel 26 has been accordingly set with relation to the disc element I9 for the selection of the station.

It is preferable to provide the hereinbefore described switch 96 in the motor circuit in order to manually close and open the circuit at will, both as a measure of safety by having the switch open when the receiving apparatus is not in use, and in an emergency necessitating the stopping of the motor before it has completed its normal operation under the automatic control. This switch may be of any approved kind, but, as

shown in the illustrated mechanical structure (see Figs. 1, 2, 3, and 5), is of the push-andpull type with a manipulating knob 96 located conveniently on the outer side of the front wall or panel 2I of the cabinet.

The apparatus, as illustrated, is provided with the usual pilot light for illuminating the station indicating dial wheel 26, as shown conventionally at I95 in Figs. 3, 4, and 13, said pilot light being connected in an obvious manner to the regular radio receiver circuit through the wires I96 and I91, and of itself forming no part of the present invention, but only functioning in the usual way in illuminating the ,dial wheel 26 to facilitate the reading of the station indicating symbols thereon.

By the application of the present invention to a radio receiver a great many different stations maybe selectedin advance to be tuned in automatically at any desired time during the day or .night, either a diiferentstation at the end of each period or the same station may be held tuned in throughout several successive periods. That is to Say, in the particular adaptation illustratedin the accompanying drawings, wherein the provision for automatic reception is for periods of fifteen minutes duration each, the settings may be made for atotal of twelve hours,

permitting tuning in of forty-eight different stal tions during that time at fifteen minutes duration each, or a less number of the same duration each,.as may be desired. So, too, adjustment of adjoining disc members I9 may be made to continue the reception of the broadcast from a selected station for the duration of as many fifteen-minute periods in succession as may be desired. Also, if it is desired at any time to receive the broadcast continuously from a single station, through an indefinite period, the automatic control may be cut out by disconnecting the clutchmember I 53 from the oscillatory crank arm I6I and with the switches 35, 62, and H2 turned on, the station can be tuned in, asdesired, by manual manipulation of the toothed wheel ,23 in the working adjustment of the dial 26 and the connected rotors 29 of the condensers .3I and 32.

Then, again, if it is desired to set the. automatic controlling means for tuning in at a later time,-the clutch I53 is engaged with the crank arm I6], and with the switch 35 on, and the switches 62 and I I2 off, the starting pin I06 is inserted in the proper socket tube 14 for the time of starting operation for automatic tuning in; and if it is desired to automatically place the apparatus in inoperative condition the stoppin in I05 is accordingly inserted in the proper socket tube I4.

An example of a disc setting is illustrated in Figs.'8, .9, l0,-and 11, wherein the discs I9 for the 5 oclock and 8:45 oclock periods have been set, and, as shown in Fig. 8, the key or setting pin I66 has been inserted in locking engagement with the disc I9 for the 6 oclock period. After the key or setting pin I86 is withdrawn from engagement with the last mentioned disc I9, the three mentioned discs will rotate in their relatively set relation on the shaft 80, and when the disc for the 5 oclock period has been brought into electrically conductive contact with its companion brush element I6, thereby completing the circuit through the electric motor I3I, the shaft is rotated and continues to rotate until the insulated insert or dead spot 9| on the disc is 7 l ll brought into engagement with the brush element 16, thereby breaking the circuit and stopping rotation of the shaft.

At the end of the fifteen-minute period during which the shaft has remained idle and the broadcast has been received from the station for which the dial wheel 23 had previously been set in relation to the 5 oclock disc, the contact tongue lei of the rotary clock element I 48 will have engaged the tubular socket member 14 for the 5:15 oclock period, whereupon the motor circuit will be closed through the electrical conductive contact between the correlated disc element l9 and brush element 16, and the shaft 83 is accordingly rotated until the insulated insert or dead spot SI of that particular disc is in contact with the companion brush element, thereby breaking the circuit so that the shaft remains again idle through another fifteen-minute period, during which time the broadcast from the same or a different station may be received according to the relative setting of the dial wheel 25, and so on until the controlling apparatus has been rendered inoperative either by manual manipulation of the switches 35, 62, and H2, or automatically, at a predetermined time, by the insertion of the stopping pin I05 in the proper tubular socket member 14, as has been hereinbefore set forth.

By the correlated views in Figs. 9, 10, and 11, the relative location of the insulated inserts or dead spots SI of the 5 oclock and 8:45 oclock discs F9 are on opposite sides of the dead central horizontal line in which the insulated insert or dead spot 9! of the 6 oclock disc is located. This is to show that such relative location will occur, variably, in the adjustment of the several disc elements 79 throughout the entire series thereof on the shaft 89, and no matter on which side of the dead central line the spot 9i may be positioned at the time the electrical circuitis closed through any disc 19, it will be brought into dead central position for engagement with its correlated brush element 16 on either the upstroke or downstroke of the crank arm lfil, as previously herein stated, and whereupon the shaft 89 remains stationary until the circuit is closed through the next adjoining disc element 79.

Obviously the operating and controlling means of the present invention may be applied to different makes of radio receiving apparatus without material alteration in either, and at the same time the construction and arrangement of the several parts and the particular application thereof may be modified in many respects without in the least departing from the spirit and scope of the invention as defined by the appended claims. The invention, therefore, is not limited to the specific details of structure shown in the accompanying drawings.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

l. The combination of a radio receiver having a manually operable rotatable tuning element, a relatively movable station indicator dial, and automatic time controlled tuning-in means including a shaft geared to said manually operable rotatable tuning element, a series of disc elements rotatably mounted on said shaft and frictionally held with respect to each other and to said shaft whereby to rotate together but permitting independent rotation of the shaft and the other disc elements when one of said disc elements is held against rotation, said disc elements being respectively coordinated sequentially with equally divided intervals of time, means for releasably hold ing said disc elements selectively, at will, while manually turning said shaft and said gear connected rotatable tuning element to set the station indicating dial with respect to said disc ele ment so held, and time controlled power means releasably connectible with the shaft carrying said disc elements and including a controlling clock mechanism and switch elements in electrical circuits in which said disc elements are respectively included, whereby, at a given time and throughout the duration of the interval for which a disc element is selectively set, the radio receiver is operated automatically.

2. The combination of a radio receiver having a manually operable rotatable tuning element, a

relatively movable station indicator dial, and

automatic time controlled tuning-in means in cluding a shaft geared to said manually operable rotatable tuning element, a series of disc elements rotatably mounted on said shaft and frictionally held with respect to each other and to said shaft whereby to rotate together but permitting independent rotation of the shaft and the other disc elements when one of said disc elements is held against rotation, said disc elements being of electrical conductivity and provided with an insulated portion and respectively coordinated sequentially with equally divided intervals of time, a separate electrically conductive brush element cooperating with each of said I disc elements, a clock mechanism having a series of separate stationary contact elements insulated from each other in spaced relation and coordinated one each to the respective disc elements and in the same interval of time relation to each other, said stationary contact elements being electrically connected with said brush elements, amovable .element successively engageable with said stationary contact elements and included in a switch operating circuit which is closed when said movable element is in engagement with one of said stationary contact elements and the coordinated disc element thereof is in contact with its cooperative companion brush element at any place except said insulated portion, and an electric motor releasably connectible, at will, to the shaft carrying said disc elements, the herein described switch controlled by said clock mechanism and disc elements controlling the operation of said motor and being normally open.

3. The combination of. a radio receiver having a manually operable rotatable tuning element, a relatively movable station indicator dial, and automatic time controlled tuning-in means including a shaft geared to said manually operable rotatable tuning element, a series of disc elements rotatably mounted on said shaft and frictionally held with respect to each other and to said shaft whereby to rotate together but permitting independent rotation of the shaft and the other disc elements when one of said disc elements is held against rotation, said disc elements being of electrical conductivity and provided with an insulated portion and respectively coordinated sequentially with equally divided intervals of time,

to the respective disc elements and in the same interval of. time relation to each other, said stationary contact elements being electrically connected with said brush elements, a movable element successively engageable with said stationary contact elements and included in a switch operating circuit which is closed when said movable element is in engagement with one of said stationary contact elements and the coordinated disc element thereof is in contact with its cooperative companion brush element at any place except said insulated portion, an electric motor releasably connectible, at will, to the shaft carrying said disc .elements, the herein described switch controlled by said clock mechanism and disc elements controlling the operation of said motor and being normally open, and a combined manually and electrically operable switch in said motorswitch controlling circuit.

4. The combination of a radio receiver having a manually operable rotatable tuning element, a relatively movable station indicator dial, and automatic time controlled tuning-in means including a shaft geared to said manually operable rotatable tuning element, a series of disc elements rotatably mounted on said shaft and frictionally held with respect to each other and to said shaft whereby to rotate to ether but permitting independent rotation of the shaft and the other disc elements when one of said d sc elements is held a ainst rotation. said disc e ements being of electrical conductivity and provided with an in ulat d portion and r s ectively coordinated sequentially w th eonailv divided intervals of time. a separate el ctrical y conductive brush element cooperatin with each of said disc elements. a clock mechanism having a series of separate stationary contact lem nts insu t d from each other in s aced lati n a d coordinated one each to t e resoect ve d sc elementsand n the some interval of time re ation to each other. sa d stat onary c nta t elem nts being electric ly connected w th sa d bru h e m ts. a m vabl element succes- :ivnlv en aceah e with said stationary contact e eme ts and incl d in a s tch O vat ng circu t which is closed when s id movable, element is in en a ement with one of sa d stationar con ta t elemen s a d the coordinat d d sc elem nt thereof is in ont ct w th its oonerative co npanion bru h element at a y place exceot 591d insulat d portion. an electric motor releasably connectible, at will. to the shaft carrying said disc elements. the herein described switch controlled by said clock mechanism and disc elements controllin the operation of said motor and being normally open, and a supplemental switch in said motor switch controllin circuit. said sup lemental switch being manually operable and having electrical means cooperahle with said clock control mechanism for opening and closing the switch automatically at predetermined times.

' 5. Means for tuning-in radio receiving a paratus, comprising a shaft operably connected to a manually operable tuning in instrumentality of the apparatus, a series of like disc elements mounted on said shaft and frictionally en a ed whereby to normally rotate together with the shaft, said discs being of electrical conductivity provided with an insulated portion. a separate brush element of electrical conductivity in coopervided with a contact portion and included in an "electrical switch controlling circuit in which said disc elements are also electrically connected, an annular series of stationary contact members corresponding in number to said disc elements and respectively coordinated one each to one of said disc elements, each stationary contact member being electrically connected to the companion brush element of' its coordinated disc element, whereby said electrical switch controlling circuit is intermittently closed as the contact portion of said rotary element of the clock mechanism successively engages said stationary contact members, a motor controlled by said switch, and power means operated by said motor and releasably connectible with the shaft carrying said disc elements, at will.

6. Means for tuning-in radio'receiving apparatus, comprising a shaft operably connected to a manuallyoperable tuningin instrumentality of the apparatus, a series of like disc elements loosely mounted'on said shaft and frictionally engaged whereby to normally rotate togetherwith the shaft, said discs being of electrical conductivity and each being provided with an insulated portion, a separate brush element of electrical conductivity in cooperative contact with each of said disc elements, said brush elements being included in a circuit including a controlling clockmechanis m. means for selectively engaging and holding said disc elements from rotation whereby to set the manually operable tuning-in instrument'a t relative to the disc so engaged and held, a supplemental electrical switch inthe controlling circuit, electrical means for] automatically closing said supplemental switch including a circuit terminal element insertable selectively in correlation to the stationary contact'memb'er of. the clock mechanism coordinated with the'disc element for the desired time of starting radio reception, and similar means for opening said supplemental sw tch ata redetermined time for cessation of radio reception.

'7. The herein described tunin -in m s for I:

ra oreceiving apparatus, comprising a shaft operably connected to a manually operable tuningin instrumentalitv including a station ind o 'i dial. aseries of'frictionally engaged like disc elements loosely mounted whereby to normal y rotate together with the shaft. said disc elements being of electrical conductivity and each being provided with an insulated portion, said disc elements being coordinated for like intervals of radio reception but beginning at sequentially different times, means for releasably holding said disc elements selectively, at will, while rotating said shaft together-with the manually operable tuning in instrumentality whereby to set the station indicating dial and the tuning-in instrumentality relative to the disc elements so held, the insulated portions on said disc elements being located in a common horizontal plane when the ele ments are releasably held as and for the purpose described, and time controlled means for automatically moving said disc elements to the same position in which they are releasably held for the aforesaid manual station selecting manipulation, said means including a motor releasably connect ble to said shaft, a. normally open circuit controlling switch for the motor, and an electrical controlling device for closing said switch, the circuit for which includes a direct electrical onnection between the device and said disc elements, separate brush elements of electrical conductivity in cooperative contact with each of said disc elements, said brush elements being separately con nected to stationary contact members which are spaced apart corresponding to the intervals of time for which the disc elements are coordinated, and a movable contact member in a clock mechanism successively engaging said stationary contact members whereby to compete the circuit for the energization of the electrical closing device for the motor controlling switch, and whereby the motor continues to operate until the companion brush element is engaged by the non-electrical surface spot of the disc element, thereby breaking the motor controlling circuit.

8. Means for the automatic tuning-in of radio receiving apparatus, comprising a shaft operably connected to a manually operable tuning-in instrumentality, said instrumentality including a visible station indicating dial, a motor releasably connectible with said shaft, at will, a series of frictionally engaged disc elements loosely mounted whereby to normally rotate together with the shaft, means for selectively engaging and holding said discs while the shaft is rotated independently thereof whereby to adjustably position the station indicating dial and manually operable tuning-in instrumentality relative to the disc elements so held, and time controlled means for operating said motor including a normally open switch and an electrical device for automatically closing the switch, the circuit for said electrical switch closing device including therein said disc elements, and a series of correlated brush elements engaging said disc elements and separately connected to a series of stationary contact elements spaced apart and individually coordinated with the respective disc elements, and a movable contact element in a clock mechanism engageabie sequentially with said stationary contact members.

9. Means for the automatic tuning-in of radio receiving apparatus, comprising a shaft operably connected to a manually operable tuning-in instrumentality, said instrumentality including a visible station indicating dial, a motor releasably connectible with said shaft, at will, a series of frictionally engaged disc elements loosely mounted whereby to normallyrotate-together with the shaft, means for selectively engaging and holding said discs while the shaft is rotated independently thereof whereby to adjustablyposition the station indicating dial and manually operable tuning-in instrumentality relative to the disc elements so held, and time controlled means for operating said motor including a normally open switch and an electrical device for automatically closing the switch, the circuit for said electrical switch closing device including therein said disc elements, a series of correlated brush elements engaging said disc elements and separately connected to a series of stationary contact elements spaced apart and individually coordinated with the respective disc elements, a movable contact element in a clock mechanism engageable sequentially with said stationary contact members, and a normally closed switch in the reproducer circuit of the radio receiving apparatus, said last mentioned switch being operably connected to the electrical closing device for the motor controlling switch whereby to be opened upon the closing of said motor controlling switch.

10. The combination of a radio receiver, combined manually operable and automatically operable tuning-in means, the automatic operating means including an electric motor releasably connectible therein, a normally open switch in the motor controlling circuit, an electrical device for closing said switch, a clock mechanism including circuit controlling elements cooperating with correlated, sequentially timed, movable station selecting elements operated and controlled by said motor, and controlling said electrical switch closing device, a normally closed switch in the reproducer circuit of the radio receiver operably connected to said electrical switch closing device whereby to be opened when said device is operated to close said normally open motor circuit controlling switch, a manually operable switch for opening and closing the energizing circuit of the radio receiver, a supplemental combined manually operable and automatically operable switch for the energizing circuit of the receiver, electrical means for closing said supplemental switch including a circuit terminal element insertable selectively for engagement by a circuit controlling element of the clock mecha-' nism, and similar electrical means for automatically opening said supplemental switch at a predetermined time.

11. The herein described tuning-in means for radio receivers, comprising a series of like frictionally engaged disc elements mounted on a shaft to normally rotate in unison therewith, said shaft being operably connected to a manually operable tuning-in instrumentality of the radio receiver, means for releasably holding said disc elements, selectively at will, while adjusting said manually operable tuning-in instrumentality in relation to the discs so held for reception of the broadcast from a desired station at a given time, releasably connectible motor operated means for rotating said shaft and the disc elements thereon, and time controlled means for the actuation of said motor operating means, said controlling means including a clock mechanism, having a rotating element traveling coincidentally with the hour hand spindle of the clock mechanism and provided with a contact portion, and a concentric annular series of spaced stationary contact members sequentially engageable by the contact portion of said rotatable element of the clock mechanism, each of said stationary contact members being individually connected electrically with aseparate brush element cooperatively engaging one of said disc elements, said disc elements being of electrical conductivity but having an insulated portion whereby, upon engagement of the cooperating brush element with said portion, an electrical circuit is thereby broken and the motor operated means rendered inactive.

12. The herein described automatic controlling and operating means for tuning-in radio receivers, comprising a series of individually adjustable, progressively timed, coordinated disc elements cooperatively associated for selective setting and adjustment with respect to a manually operable tuning-in instrumentality of the radio receiver, and cooperating time controlled means including a clock mechanism having a rotatable element provided with a contact portion, said element being included in the electrical controlling circuit for releasably connectible motor operated means having a surface portion of non-electrical conductivity whereby, upon engagement of the coopcrating brush element with said portion, said elec- .trical circuit is broken and the motor operated actuating means rendered inactive.

13. In automatic tuning-means for radio re- 'ceivers, an electrical controlling circuit including an annular series of spaced tubular socket members, each individually electrically conductive, a rotatable electrical terminal element having a contact portion engageable successively with said socket members during its rotation, a station selecting unit comprising separate electrically conductive rotatable disc elements collectively electrically connected in said circuit and each having an electrical non-conductive surface portion, individual brush elements in contact with said disc elements and separately connected respectively to one of said socket members in coordinated timed relation to the rotatable disc element with ,which the connected brush element cooperates, said controlling circuit being alternately closed and opened during the rotation 01 said rotatable terminal element which sequentially engages said tubular members and also during the rotative movement of said rotatable disc elements, said circuit controlling the motive means for said disc elements, an automatically operable switch for opening and closing the receiver energizing circuit, an electrical device for moving said switch to closed position including a circuit, one terminal of which is said rotatable terminal element, and the other terminal of which is a pin insertable selectively in one of said tubular socket members and into the path of said rotatable terminal element to be thereby engaged, and an electrical device for moving said last named switch to open position,'the controlling circuit of which includes said rotatable terminal element and a corresponding terminal pin insertable selectively in said tubular socket members.

14. Time controlled automatic tuning-in means for radio receivers, comprising, in combination with an ordinary radio receiving apparatus having a manually operable tuning-in instrumentality and a cooperating automatically operable time coordinated station selecting instrumental- 'ity, a supporting panel having a circular opening, a clock, the dial of which is inserted in and visible through said panel opening, and the mechanism of which is contained within a housing supported in spaced relation to the inner face of said panel, a rotatable circuit terminal element located between the panel and the clock housing and movsaid tubular members being respectively correlated to the hour and fractional time markings of the clock dial and being incorporated with in- 15 dividual connections in said operating circuit for the tuning-in instrumentality, a circuit terminal pin insertable selectively in one of said tubular contact members but electrically insulated therefrom and projecting beyond the inner end thereof, 20 said terminal pin being incorporated in said starting circuit, and a like terminal pin incorporated in said stopping circuit, said rotatable terminal element having a brush contact portion engage able in its rotation successively with said tubular 25 contact members and with the inserted terminal pins.

15. In an automatic tuning-in instrumentality for radio receivers, a tuning-in controlling circuit, an automatic starting circuit, an automatic stopping circuit, a clock mechanism having a movable terminal element rotatable coincidently with the hour hand of the clock mechanism, and incorporated as a part of each of said operating, starting, and stopping circuits, an annular series of open-ended tubular stationary terminal members separated and insulated from each other and being incorporated with individual connections in said operating circuit, said stationary terminal members being respectively correlated to the hour and fractional time markings of the dial of said clock mechanism, and separate terminal pins incorporated respectively as a part of said starting and stopping circuits and being respectively insertable selectively in one of said tubular stationary terminal members but insulated therefrom and projecting beyond the inner end thereof, said movable terminal element of the clock mechanism in its rotation successively engaging said stationary tubular contact members and the in- 50 sorted terminal pins.

CARL KOHLSAAT. 

